security robot (toaru majutsu no index)
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Type of robots in ToAru Majutsu no Index series.
A Security Robot is an automated cylindrical machine designed to protect security, and enforce rules. It is specifically stated as a mobile criminal surveillance device. Each unit costs 1.2 million yen.
It can be found all over and only in Academy City. Like the Cleaning robot, it is cylindrical in shape, and with it, it is one of the most noticeable features of the scientific advancement of the city.